T.P · Theo A Plomp · Tj Plomp · Tjeerd Plomp
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| International Encyclopedia of Educational Technology | 978-0-08-042307-4 (0-08-042307-8) | 1996 | D.P. Ely |
| The IEA Study of Computers in Education: Implementation of an Innovation in 21 Education Systems | 978-0-08-041935-0 (0-08-041935-6) | 1993 | W.J. Pelgrum |